11899808 has 12 divisors (see below), whose sum is σ = 23427810. Its totient is φ = 5949888.

The previous prime is 11899787. The next prime is 11899817. The reversal of 11899808 is 80899811.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 11641744 + 258064 = 3412^2 + 508^2 .

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 185903 + ... + 185966.

Almost surely, 2^11899808 is an apocalyptic number.

It is an amenable number.

11899808 is a deficient number, since it is larger than the sum of its proper divisors (11528002).

11899808 is an equidigital number, since it uses as much as digits as its factorization.

11899808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371879 (or 371871 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 44.

The square root of 11899808 is about 3449.6098330101. The cubic root of 11899808 is about 228.3038935292.

The spelling of 11899808 in words is "eleven million, eight hundred ninety-nine thousand, eight hundred eight".